A4LD issue

[RangerJ]

1989 2.9 A4LD. when I reach 35-45 mph the trans seems to jump in and out of od.I either let up on the gas or accelerate and it stops. Fluid is full.was rebuilt approx 5 years ago.Any ideas?Thanks

 

[tonyjklh]

mine used to do that also. mine was caused by 2 teeth broke on the spedo gear. i replaced the gear and it worked perfectally after. the broken tooth wasnt enough to mess up the spedometer but was enough to mess with the pcm. i dont know if that year was computer controlled for overdrive or not but its worth looking in to.

 

[4.0B2]

Most def check your vehicle speed sensor gear and the gear in the transfer case! I bet it's not even a transmission problem. That's exactly what mine did... And it was the gear in the transfew case.

 

[RangerJ]

Thanks for the replies.I will have those items checked.